Hot dipping zinc aluminum nickel bismuth rare earth alloy used for steel component hot dipping zinc and ingot case and method thereof

Abstract

The invention relates to a zinc alloy used by steel structural component in zinc hot dip plating and the ingot shape and the method thereof. The alloy component and the weight per cent are of 0.008 per cent (wt) to 0.012 per cent (wt) Al, 0.04 per cent (wt) to 0.06 per cent (wt) Ni, 0.02 per cent (wt) to 0.08 per cent (wt) Bi, 0.006 per cent (wt) to 0.01 per cent (wt) RE, and zinc and impurity as the rest composition. The ingot shape is of T-shaped cuboid with two symmetrical ear curls; wherein, the bottom of the cuboid is a plane; the ear curls are provided with hoisting holes; the cuboid is of four included side planes, taking in a big top and small bottom shape. The zinc hot dip plating method is to melt the alloy directly into zinc bath; the application is simple; the zinc bath alloy elements Al, Bi, Ni and RE with stable and uniform content can alleviate or eliminate the Sandelin Effect generated by an active steel galvanization, perfect the wetting behavior and flow property of the iron matrix and the zinc bath, improve corrosion resistance performance and mechanical performance of the coating, reduce the thickness of the coating and lower the cost. With the appropriate shape as well as ingot weight, the zinc alloy ingot shape has the advantages of able to meet zinc adding requirement of the large capacity galvanization equipment, convenient hoisting and fork transport, small specific surface area, suitable for storage and multiple layers stacking tier, saving storing room, and stability as well as safety.

Description

technical field [0001] The invention relates to a zinc alloy, an ingot form and a method thereof, in particular to a zinc alloy used for hot-dip galvanizing of iron and steel components, an ingot form and a method thereof. Background technique [0002] At present, the hot-dip galvanizing industry at home and abroad adopts zinc alloy bath galvanizing. Zn-Al-Ni-Bi-RE alloy is not only very effective in improving the brightness of the coating, but also can effectively eliminate the Sandelin effect produced by active steel galvanizing. , improve the wettability and fluidity of the iron substrate and the zinc bath, improve the corrosion resistance and mechanical properties of the coating, and reduce the thickness of the coating. It is an ideal zinc alloy for hot-dip galvanizing. Zinc alloy baths are usually prepared with zinc alloy at the production site before use. Due to the generally large volume of steel components, the volume of the zinc bath equipment used for galvanizing ...

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Problems solved by technology

[0007] Still another object of the present invention is to provide a new hot-dip galvanizing method, which uses hot-dip galvanized aluminum-nickel-bismuth rare earth alloy ingots to directly melt into a zinc bath to solve various problems existing in the hot-dip galvanized zinc bath. Solve problems such as segregation and burning of elements to improve the brightness of the coating, effectively eliminate the Sandelin effect caused by active steel galvanizing, improve the wetting performance and flowability of the iron substrate and the zinc bath, and improve the corrosion resistance and mechanical properties of the coating. , reduce coating thickness, reduce cost

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